Nut-lock



DJ. WALLACE.

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1,333,393, 4 Pmmxmug.23,1921.l

if #3 @Q4 immuni UNITED STATES DAVID T. WALLACE, 0F MINNEAPOLIS, MINNESOTA.

NUT-Loox.

Specification of Letters Patent.

Patented Aug. 23,1921.

Application led April 21, 1920. Serial No.` 375,520.

thereof. My invention has among its objects theY production of a device of the kind described that is simple, convenient, durable, reliable, efficient, inexpensive and satisfactory for use wherever found applicable. It has particularly as an object the production of a device which may be employed in connection with standard bolts and nuts withoutin any way modifying the bolts or nuts andV without impairing their efficiency.

Many other objects andadvantages of they construction herein shown and described will be obvious to those skilled in the art from the disclosure Vherein given.

To this end my invention consists in the novel construction, arrangement and combination'of parts herein shown and described, and more particularly pointed out in the claims. Y

In the drawings, wherein like reference characters indicate like or corresponding parts,

Figure 1 is a side elevation of my device in operative position upon the bolt;

Fig. 2 is a sectional view taken substantially on line 2-2 of Fig. 3;

Fig. 3 is a sectional view taken substantially on line 3-3of Fig. 1; Y

Fig. 4 is a side elevation similar to Fig. 1 showing the adjacent side of the device to that shown'in Fig. 1; and

Fig. 5 is a plan view of a blank before bending.

Referring to the drawings7 in which the preferred form of my device is shown, 1 represents a bolt of suitable size, shape and material,and 2 a nut also of suitable size, shape and material and threaded internally to engagewith the thread 3 on the bolt. The bolt is shown provided with a head 4 of suitable size and shape, it being understood that the bolt and nut represent any desired construction and are shown for the purpose of illustrating the application and operation of my improved nutllock.

My improved lock consists of a part preferably of metal and of the'desired strength and resiliency, which is first blanked out and thence formedV up ready for application. AsA

shown, the same consists of abody part 5 formed with an opening 6 therethrough of a size to fit over the bolt and not engage the threads, as is most clearly shown in Fig. 2. Formed on the part 5 are one or more tongues or extending parts 7, each of which is preferably formed with an enlarged end portion 8 cut away at the extreme end as at 9 so as to substantially fit the periphery of the bolt adjacentthe bottom kof the thread, as most clearly shown in Fig. 3. The same is, however, preferably made with sharp corners indicated at 10 which will bind against or bite into the bolt as shown in the figure just referred to. The same is alsoA provided with one or'more projecting parts 12fwhich are formed with cam faces 14 arranged to coperate with the faces or edges 15 on the end part 8 when the parts are formed. In forming theparts the portions 12 are preferably turned back or bent substantially at the point 13 `(see Figs. 1 and 4). The portion 8 is preferably bent back at 11 and over portions 12 so that the back edges or faces 15 will be in position to coperate with or en age the cam faces 14, the parts 12 substantlally forming abutments.

The locking member or nut lock is applied substantially as indicated in Fig. 1, the same being turned down by a wrench or the equivalent until the body portion 5 engages with the end of the nut, and end portions 8 substantially loosely engaging at the base of the threads. As the same is turned down further, the edges 9 tend to pinch the bolt at the base of the thread, the free ends following the thread being moved toward the nut `by the turning ofthe nut lock. 'However, the edges 15 abutting against the faces 14 tend to stiffen the extending portion and prevent the same from yielding or springing at the bent over .portion 11. The tighter the nut lockis turned down, the more firmly it takes hold. There is no Vtendency for the nut lock to turn olf as the engagement of the faces V91 and side portions' 10 tend to firmly lock thefsame against accidental turning, the same impinglng into the materia-l with a wrench. vIt 'will be seen that with this style of nut lock the bolt and nut are standard so that there is no additional expense in manufacturing or providing a specially constructed nut or a specially constructed'bolt. The device is simple to manufacture as it may be readily blanked out andy formed, a fine degree in accuracy in the manufacture not being-required. The same may be made with any desired number of extending parts-7 and Sand l2, two or more, however, being preferred. Where more than one is employed, should one for any reason give way and fracture'by bending or by being accidentally struck, the remaining portion or portions will retain thedevice in place and `will perform all of the functions described. Y

Having thus-described my invention, it is obvious that various immaterial modifications may be made in the same without departing from the spirit 'of my invention; hence I do not wish to be" understood as limiting myself to the exact form, construction, arrangement' andcombination of parts herein shown and described or uses mentioned.

WhatvI claim as new and desire to secure by Letters Patent` is:

1. In adevice of the kind described and in combination, a threaded bolt and a nut' cooperating With said. bolt, and a washer mounted on said bolt and provided with an extended portion at one side bent back upon itself and of a length to engage with the bolt at the base ofthe thread therein at a point at one side of the washer, and means on said extending part and integral therewith for engaging said bent over portion on the'sides at the rear edges and transmitting thrust directly between the nut and said bent over portions-upon movement of the nut, whereby the bent over portion is maintained in engagement with the bolt and rotation of thc nut and. washer prevented. j

2. In a device ofthe kindl described and in combination, a threaded bolt and a nut cooperating withl said bolt, and a washer mounted'onsaid" bolt and provided with eX- tended portions at opposite sides, eachbent back upon itself and of a length to engage. with the boltV at the base ofi the thread therein at points' at opposite sides'of the washer, and' means integralY with said extended portions amd' lying in a. plane perpendicular to said; bent over portions for engaging said ceive a bolt, and provided with tongue portions extending radially from the sides thereof and each formed with a lateral'lextension lat each side adjacent the end, the free end being bent fover and back upon itself at an angle to the tongue portions at the inner portion thereof, and means on the tongue adjacent the inner end thereof for engaging said laterally extending portions when the free end of the tongue 1s brought closer to the body of the washer.

4f. In a device of the kind describedand in combination, a nut lockconsisting of ay washer having an opening of a size to receive a bolt, and provided with resilient-tongue portions extending radially from the sides thereof and each formed with a lateral extension at each side adjacent the end, the free .end being. substantially semi-circular invoutline, the free end being bent over and back upon itselflat Van angle to thet'ongue portions at the innerpcrtion thereof', and means ony thek tongue adjacent theinner end thereof for engaging `said laterally extending portionswhenthe free endrof the tongue is brought closer to the body of the washer. 5. In a nut lock of the kind described and in combination, a bolt having a thread formed therein, a nut threaded to engage the thread on said bolt', a locking member con- V withl the bolt', Vandmeans on said-extending part or tongue for engaging'said extending end when the free end of thetongue is in engagement with the bolt.

6. In a nutV lock of the kind described and in combination, Va `bolt having a thread formed therein, a nut threaded to engage the thread on said bolt, a locking memberI consisting of a part constructed for engagement with the nut and withv anl openingat its center of a size slightly greater' than the diameter of the bolt, said partprovided with a radially extending tongue on one or more sides formed integrally with the part and having its free end"V bent over adjacent the bolt and at anv angle thereto, and constructed at the free end-to positively engage with the bolt, and'mea-ns onv eachy tongue for engaging said, bent over end when the free end of the tongue is in engagement with the bolt.

7. A nut lock formed of a oneieee blank havin an opening of a size slig tly larger than t e diameter of the bolt with which it is to be used, and a radially extending tongue, said tongue having inner and outer enlarged portions and being reduced in width at its intermediate portion, the ree or outer end of said tongue having its outer edge recessed between the sides to form prongs, the inner edge of the enlarged free end being perpendicular to the sides of said reduced tongue portion, the inner enlarged portion being in the form of laterally projecting ears haw ing their forward edge perpendicular to the sides of said reduced tongue portion and their rear edges rounded, whereby when the tongue is bent transversely of itself at the reduced portion and said ears are bent transversely to said bent free end, said rounded edges'of the ears will engage the rear edges of the enlarged free tongue end, and tend to keep the prongs of the tongue end in engagement with the threads of the bolt.

In testimony whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

DAVID T. WALLACE. Witnesses ROY W. HILL, BLANCHE CHALMERS. 

